Yes please check:

Specification: http://tutorials.jenkov.com/iap/index.html

Benchmarks: http://tutorials.jenkov.com/iap/ion-performance-benchmarks.h...

Tutorials: http://tutorials.jenkov.com/iap-tools-java/index.html

Here is also a recent Infoq.com article http://www.infoq.com/articles/IAP-Fast-HTTP-Alternative?utm_....